maintain vs affirm

maintain and affirm both are verbs.

Word	Noun	Adjective	Verb	Adverb
maintain	No	No	Yes	No
affirm	No	No	Yes	No

As verbs, affirm is a hypernym of maintain; that is, affirm is a word with a broader meaning than maintain:

maintain (verb)	affirm (verb)
stick to correctly or closely	establish or strengthen as with new evidence or facts
state categorically	to declare or affirm solemnly and formally as true
state or assert	say yes to
support against an opponent
maintain by writing regular records
supply with necessities and support
keep in safety and protect from harm, decay, loss, or destruction
have and exercise
maintain for use and service
cause to continue in a certain state, position, or activity